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Junos OS: Nexthop index allocation failed: private index space exhausted after incoming ARP requests to management interface
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(0 users assessed)Junos OS: Nexthop index allocation failed: private index space exhausted after incoming ARP requests to management interface
MITRE ATT&CK
Collection
Command and Control
Credential Access
Defense Evasion
Discovery
Execution
Exfiltration
Impact
Initial Access
Lateral Movement
Persistence
Privilege Escalation
Topic Tags
Description
A vulnerability in the IP next-hop index database in Junos OS 17.3R3 may allow a flood of ARP requests, sent to the management interface, to exhaust the private Internal routing interfaces (IRIs) next-hop limit. Once the IRI next-hop database is full, no further next hops can be learned and existing entries cannot be cleared, leading to a sustained denial of service (DoS) condition. An indicator of compromise for this issue is the report of the following error message: %KERN-4: Nexthop index allocation failed: private index space exhausted This issue only affects the management interface, and does not impact regular transit traffic through the FPCs. This issue also only affects Junos OS 17.3R3. No prior versions of Junos OS are affected by this issue. Affected releases are Juniper Networks Junos OS: 17.3R3.
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CVSS V3 Severity and Metrics
General Information
Vendors
- juniper
Products
- junos 17.3
References
Additional Info
Technical Analysis
Report as Exploited in the Wild
CVE ID
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